Techniques for pucch repetition based on pdsch repetition

ABSTRACT

Aspects described herein relate to repetitions of uplink transmissions. In an example, a network entity may transmit, to a user equipment (UE), an indication of repetitive scheduling of a downlink control channel, wherein the indication triggers a correspondence between the repetitive scheduling of the downlink control channel and one or more repetition factors for an uplink control channel, each of the one or more repetition factors corresponding to a repetition count for uplink control messages on the uplink control channel; and receive, from the UE on the uplink control channel, repetitions of an uplink control message according to a first repetition factor of the one or more repetition factors for the uplink control channel.

CROSS-REFERENCE TO RELATED APPLICATION(S)

The present application claims benefit of U.S. Provisional ApplicationNo. 63/170,300 entitled “TECHNIQUES FOR PUCCH REPETITION BASED ON PDSCHREPETITION” filed Apr. 2, 2021, which is assigned to the assignee hereofand hereby expressly incorporated by reference herein.

TECHNICAL FIELD

Aspects of the present disclosure relate generally to wirelesscommunication systems, and more particularly, to dynamically indicatingone or more repetition factors for a physical uplink control channel(PUCCH) based on a physical downlink control channel (PDCCH).

BACKGROUND

Wireless communication systems are widely deployed to provide varioustypes of communication content such as voice, video, packet data,messaging, broadcast, and so on. These systems may be multiple-accesssystems capable of supporting communication with multiple users bysharing the available system resources (e.g., time, frequency, andpower). Examples of such multiple-access systems include code-divisionmultiple access (CDMA) systems, time-division multiple access (TDMA)systems, frequency-division multiple access (FDMA) systems, andorthogonal frequency-division multiple access (OFDMA) systems, andsingle-carrier frequency division multiple access (SC-FDMA) systems.

These multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent wireless devices to communicate on a municipal, national,regional, and even global level. For example, a fifth generation (5G)wireless communications technology (which can be referred to as NR) isenvisaged to expand and support diverse usage scenarios and applicationswith respect to current mobile network generations. In an aspect, 5Gcommunications technology can include: enhanced mobile broadbandaddressing human-centric use cases for access to multimedia content,services and data; ultra-reliable-low latency communications (URLLC)with certain specifications for latency and reliability; and massivemachine type communications, which can allow a very large number ofconnected devices and transmission of a relatively low volume ofnon-delay-sensitive information.

For example, for various communications technology such as, but notlimited to NR, full duplex communication with respect to integratedaccess and backhaul (IAB) implementations may increase transmissionspeed and flexibility but also transmission complexity. Thus,improvements in wireless communication operations may be desired.

SUMMARY

The following presents a simplified summary of one or more aspects inorder to provide a basic understanding of such aspects. This summary isnot an extensive overview of all contemplated aspects, and is intendedto neither identify key or critical elements of all aspects nordelineate the scope of any or all aspects. Its sole purpose is topresent some concepts of one or more aspects in a simplified form as aprelude to the more detailed description that is presented later.

According to an example, a method of wireless communication at a networkentity is provided. The method may include transmitting, to a userequipment (UE), an indication of repetitive scheduling of a downlinkcontrol channel, wherein the indication triggers a correspondencebetween the repetitive scheduling of the downlink control channel andone or more repetition factors for an uplink control channel, each ofthe one or more repetition factors corresponding to a repetition countfor uplink control messages on the uplink control channel; andreceiving, from the UE on the uplink control channel, repetitions of anuplink control message according to a first repetition factor of the oneor more repetition factors for the uplink control channel.

In a further example, an apparatus for wireless communication isprovided that includes a transceiver, a memory configured to storeinstructions, and one or more processors communicatively coupled withthe transceiver and the memory. The one or more processors areconfigured to execute the instructions to transmit, to a UE, anindication of repetitive scheduling of a downlink control channel,wherein the indication triggers a correspondence between the repetitivescheduling of the downlink control channel and one or more repetitionfactors for an uplink control channel, each of the one or morerepetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel; and receive, from the UEon the uplink control channel, repetitions of an uplink control messageaccording to a first repetition factor of the one or more repetitionfactors for the uplink control channel.

In another aspect, an apparatus for wireless communication is providedthat includes means for transmitting, to a UE, an indication ofrepetitive scheduling of a downlink control channel, wherein theindication triggers a correspondence between the repetitive schedulingof the downlink control channel and one or more repetition factors foran uplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel; and means for receiving, from the UE on theuplink control channel, repetitions of an uplink control messageaccording to a first repetition factor of the one or more repetitionfactors for the uplink control channel.

In yet another aspect, a non-transitory computer-readable medium isprovided including code executable by one or more processors totransmit, to a UE, an indication of repetitive scheduling of a downlinkcontrol channel, wherein the indication triggers a correspondencebetween the repetitive scheduling of the downlink control channel andone or more repetition factors for an uplink control channel, each ofthe one or more repetition factors corresponding to a repetition countfor uplink control messages on the uplink control channel; and receive,from the UE on the uplink control channel, repetitions of an uplinkcontrol message according to a first repetition factor of the one ormore repetition factors for the uplink control channel.

According to another example, a method of wireless communication at anetwork entity is provided. The method may include receiving, from anetwork entity, an indication of repetitive scheduling of a downlinkcontrol channel, wherein the indication triggers a correspondencebetween the repetitive scheduling of the downlink control channel andone or more repetition factors for an uplink control channel, each ofthe one or more repetition factors corresponding to a repetition countfor uplink control messages on the uplink control channel; andtransmitting, to the network entity on the uplink control channel,repetitions of an uplink control message according to a first repetitionfactor of the one or more repetition factors for the uplink controlchannel.

In a further example, an apparatus for wireless communication isprovided that includes a transceiver, a memory configured to storeinstructions, and one or more processors communicatively coupled withthe transceiver and the memory. The one or more processors areconfigured to execute the instructions to receive, from a networkentity, an indication of repetitive scheduling of a downlink controlchannel, wherein the indication triggers a correspondence between therepetitive scheduling of the downlink control channel and one or morerepetition factors for an uplink control channel, each of the one ormore repetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel; and transmit, to thenetwork entity on the uplink control channel, repetitions of an uplinkcontrol message according to a first repetition factor of the one ormore repetition factors for the uplink control channel.

In another aspect, an apparatus for wireless communication is providedthat includes means for receiving, from a network entity, an indicationof repetitive scheduling of a downlink control channel, wherein theindication triggers a correspondence between the repetitive schedulingof the downlink control channel and one or more repetition factors foran uplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel; and means for transmitting, to the networkentity on the uplink control channel, repetitions of an uplink controlmessage according to a first repetition factor of the one or morerepetition factors for the uplink control channel.

In yet another aspect, a non-transitory computer-readable medium isprovided including code executable by one or more processors to receive,from a network entity, an indication of repetitive scheduling of adownlink control channel, wherein the indication triggers acorrespondence between the repetitive scheduling of the downlink controlchannel and one or more repetition factors for an uplink controlchannel, each of the one or more repetition factors corresponding to arepetition count for uplink control messages on the uplink controlchannel; and transmit, to the network entity on the uplink controlchannel, repetitions of an uplink control message according to a firstrepetition factor of the one or more repetition factors for the uplinkcontrol channel.

To the accomplishment of the foregoing and related ends, the one or moreaspects comprise the features hereinafter fully described andparticularly pointed out in the claims. The following description andthe annexed drawings set forth in detail certain illustrative featuresof the one or more aspects. These features are indicative, however, ofbut a few of the various ways in which the principles of various aspectsmay be employed, and this description is intended to include all suchaspects and their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosed aspects will hereinafter be described in conjunction withthe appended drawings, provided to illustrate and not to limit thedisclosed aspects, wherein like designations denote like elements, andin which:

FIG. 1 illustrates an example of a wireless communication system, inaccordance with various aspects of the present disclosure;

FIG. 2 is a block diagram illustrating an example of a network entity(also referred to as a base station), in accordance with various aspectsof the present disclosure;

FIG. 3 is a block diagram illustrating an example of a user equipment(UE), in accordance with various aspects of the present disclosure;

FIG. 4 is a diagram of an example of a process flow that supportsindications of uplink control channel repetition factor, in accordancewith various aspects of the present disclosure;

FIG. 5 is a flow chart illustrating an example of a method for wirelesscommunications at a network entity in accordance with various aspects ofthe present disclosure;

FIG. 6 is a flow chart illustrating another example of a method forwireless communications at a UE in accordance with various aspects ofthe present disclosure;

FIG. 7 is a block diagram illustrating an example of a MIMOcommunication system including a base station and a UE, in accordancewith various aspects of the present disclosure; and

DETAILED DESCRIPTION

Various aspects are now described with reference to the drawings. In thefollowing description, for purposes of explanation, numerous specificdetails are set forth in order to provide a thorough understanding ofone or more aspects. It may be evident, however, that such aspect(s) maybe practiced without these specific details.

The described features generally relate to repetitions of uplinktransmissions. A wireless communications system (e.g., a 5G system) mayrely on physical uplink control channel (PUCCH) repetition (e.g.,transmitting uplink control messages multiple times) for coverageenhancement. For example, a user equipment (UE) may transmit one or morerepetitions of an uplink control message on a PUCCH within a slot oracross multiple slots. Some techniques may provide a mechanism for anetwork entity (e.g., base station) to individually configure a UE toperform PUCCH repetition for each configured uplink control message,which may result in additional signaling for each configured uplinkcontrol message. However, such techniques may rely on an increased sizeof existing signaling, or new signaling, which may result in increasedlatency, increased signaling overhead, or the like. Some techniques mayprovide a mechanism for the base station to dynamically signal for theUE to use a preconfigured PUCCH coverage enhancement scheme. However,such techniques do not allow for a dynamic indication of a repetitionfactor (e.g., such as the PUCCH repetition count) for an individualuplink control message or a subset of uplink control messages, which mayresult in inefficient use of available resources, increased systemlatency, increased signaling overhead, or the like.

In some communication systems, base stations may implicitly indicate aPUCCH repetition factor for a UE to use on a next PUCCH transmission viathe selection of an aggregation level for the preceding PDCCH. Forexample, the base station may configure relationships between PUCCHrepetition factors and aggregation levels. To determine which PUCCHrepetition factor the UE should use, the base station may select thecorresponding aggregation level, and may transmit a downlink controlmessage (e.g., a downlink control information (DCI) message) on aphysical downlink control channel (PDCCH) using the selected aggregationlevel that corresponds to the desired PUCCH repetition factor. In somecases, applying the indicated correspondence between aggregation levelsand PUCCH repetition factors may be based on one or more rules beingsatisfied (e.g., the relationship between PUCCH repetition factors andaggregation levels is only valid if one or more conditions aresatisfied). The UE may use the indicated PUCCH repetition factor foronly a next PUCCH transmission (e.g., an ACK/NACK message for a downlinktransmission indicated in the received DCI), for all PUCCH transmissionsuntil a next DCI indicates a new PUCCH repetition factor, or for allPUCCH transmissions for the duration of a timer.

Some base stations may be configured to implicitly indicate a PUCCHrepetition factor based on a PUCCH resource indicator (PRI) bitfield ofthe DCI that schedules a physical downlink shared channel (PDSCH).

Hence, the present disclosure provides for dynamically indicating arepetition factor for PUCCH based on at least one of PDCCH or DCI sothat channel conditions for scheduling repeated PDSCH may be correlatedwith channel conditions that use PUCCH repetition. As such, the presentimplementations provide repetitions of uplink transmissions techniqueswhere a network entity may transmit, to a UE, an indication ofrepetitive scheduling of a downlink control channel, wherein theindication triggers a correspondence between the repetitive schedulingof the downlink control channel and one or more repetition factors foran uplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel; and receive, from the UE on the uplink controlchannel, repetitions of an uplink control message according to a firstrepetition factor of the one or more repetition factors for the uplinkcontrol channel. Additionally, a UE may receive, from a network entity,an indication of repetitive scheduling of a downlink control channel,wherein the indication triggers a correspondence between the repetitivescheduling of the downlink control channel and one or more repetitionfactors for an uplink control channel, each of the one or morerepetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel; and transmit, to thenetwork entity on the uplink control channel, repetitions of an uplinkcontrol message according to a first repetition factor of the one ormore repetition factors for the uplink control channel.

The described features will be presented in more detail below withreference to FIGS. 1-7.

As used in this application, the terms “component,” “module,” “system”and the like are intended to include a computer-related entity, such asbut not limited to hardware, software, a combination of hardware andsoftware, or software in execution. For example, a component may be, butis not limited to being, a process running on a processor, a processor,an object, an executable, a thread of execution, a program, and/or acomputer. By way of illustration, both an application running on acomputing device and the computing device can be a component. One ormore components can reside within a process and/or thread of executionand a component can be localized on one computer and/or distributedbetween two or more computers. In addition, these components can executefrom various computer readable media having various data structuresstored thereon. The components can communicate by way of local and/orremote processes such as in accordance with a signal having one or moredata packets, such as data from one component interacting with anothercomponent in a local system, distributed system, and/or across a networksuch as the Internet with other systems by way of the signal. Softwareshall be construed broadly to mean instructions, instruction sets, code,code segments, program code, programs, subprograms, software modules,applications, software applications, software packages, routines,subroutines, objects, executables, threads of execution, procedures,functions, etc., whether referred to as software, firmware, middleware,microcode, hardware description language, or otherwise.

Techniques described herein may be used for various wirelesscommunication systems such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, andother systems. The terms “system” and “network” may often be usedinterchangeably. A CDMA system may implement a radio technology such asCDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000covers IS-2000, IS-95, and IS-856 standards. IS-2000 Releases 0 and Aare commonly referred to as CDMA2000 1×, 1×, etc. IS-856 (TIA-856) iscommonly referred to as CDMA2000 1×EV-DO, High Rate Packet Data (HRPD),etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. ATDMA system may implement a radio technology such as Global System forMobile Communications (GSM). An OFDMA system may implement a radiotechnology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA),IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM™, etc.UTRA and E-UTRA are part of Universal Mobile Telecommunication System(UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are newreleases of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, andGSM are described in documents from an organization named “3rdGeneration Partnership Project” (3GPP). CDMA2000 and UMB are describedin documents from an organization named “3rd Generation PartnershipProject 2” (3GPP2). The techniques described herein may be used for thesystems and radio technologies mentioned above as well as other systemsand radio technologies, including cellular (e.g., LTE) communicationsover a shared radio frequency spectrum band. The description below,however, describes an LTE/LTE-A system for purposes of example, and LTEterminology is used in much of the description below, although thetechniques are applicable beyond LTE/LTE-A applications (e.g., to fifthgeneration (5G) NR networks or other next generation communicationsystems).

The following description provides examples, and is not limiting of thescope, applicability, or examples set forth in the claims. Changes maybe made in the function and arrangement of elements discussed withoutdeparting from the scope of the disclosure. Various examples may omit,substitute, or add various procedures or components as appropriate. Forinstance, the methods described may be performed in an order differentfrom that described, and various steps may be added, omitted, orcombined. Also, features described with respect to some examples may becombined in other examples.

Various aspects or features will be presented in terms of systems thatcan include a number of devices, components, modules, and the like. Itis to be understood and appreciated that the various systems can includeadditional devices, components, modules, etc. and/or may not include allof the devices, components, modules etc. discussed in connection withthe figures. A combination of these approaches can also be used.

FIG. 1 is a diagram illustrating an example of a wireless communicationssystem and an access network 100. The wireless communications system(also referred to as a wireless wide area network (WWAN)) can includebase stations 102, UEs 104, an Evolved Packet Core (EPC) 160, and/or a5G Core (5GC) 190. The base stations 102, which may also be referred toas a network entity, may include macro cells (high power cellular basestation) and/or small cells (low power cellular base station). The macrocells can include base stations. The small cells can include femtocells,picocells, and microcells. In an example, the base stations 102 may alsoinclude gNBs 180, as described further herein.

In one example, some nodes such as base station 102/gNB 180, may have amodem 240 and BS communicating component 242 for dynamically indicatingone or more repetition factors for a PUCCH based on a PDCCH, asdescribed herein. Though a base station 102/gNB 180 is shown as havingthe modem 240 and BS communicating component 242, this is oneillustrative example, and substantially any node or type of node mayinclude a modem 240 and BS communicating component 242 for providingcorresponding functionalities described herein. In some examples, the UE104 may have a modem 340 and UE communicating component 252 forreceiving an indication one or more repetition factors for a PUCCH andconfiguring repetitions of uplink transmissions.

The base stations 102 configured for 4G LTE (which can collectively bereferred to as Evolved Universal Mobile Telecommunications System (UMTS)Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC160 through backhaul links 132 (e.g., using an S1 interface). The basestations 102 configured for 5G NR (which can collectively be referred toas Next Generation RAN (NG-RAN)) may interface with 5GC 190 throughbackhaul links 184. In addition to other functions, the base stations102 may perform one or more of the following functions: transfer of userdata, radio channel ciphering and deciphering, integrity protection,header compression, mobility control functions (e.g., handover, dualconnectivity), inter-cell interference coordination, connection setupand release, load balancing, distribution for non-access stratum (NAS)messages, NAS node selection, synchronization, radio access network(RAN) sharing, multimedia broadcast multicast service (MBMS), subscriberand equipment trace, RAN information management (RIM), paging,positioning, and delivery of warning messages. The base stations 102 maycommunicate directly or indirectly (e.g., through the EPC 160 or 5GC190) with each other over backhaul links 134 (e.g., using an X2interface). The backhaul links 132, 134 and/or 184 may be wired orwireless.

The base stations 102 may wirelessly communicate with one or more UEs104. Each of the base stations 102 may provide communication coveragefor a respective geographic coverage area 110. There may be overlappinggeographic coverage areas 110. For example, the small cell 102′ may havea coverage area 110′ that overlaps the coverage area 110 of one or moremacro base stations 102. A network that includes both small cell andmacro cells may be referred to as a heterogeneous network. Aheterogeneous network may also include Home Evolved Node Bs (eNBs)(HeNBs), which may provide service to a restricted group, which can bereferred to as a closed subscriber group (CSG). The communication links120 between the base stations 102 and the UEs 104 may include uplink(UL) (also referred to as reverse link) transmissions from a UE 104 to abase station 102 and/or downlink (DL) (also referred to as forward link)transmissions from a base station 102 to a UE 104. The communicationlinks 120 may use multiple-input and multiple-output (MIMO) antennatechnology, including spatial multiplexing, beamforming, and/or transmitdiversity. The communication links may be through one or more carriers.The base stations 102/UEs 104 may use spectrum up to Y MHz (e.g., 5, 10,15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrieraggregation of up to a total of Yx MHz (e.g., for x component carriers)used for transmission in the DL and/or the UL direction. The carriersmay or may not be adjacent to each other. Allocation of carriers may beasymmetric with respect to DL and UL (e.g., more or less carriers may beallocated for DL than for UL). The component carriers may include aprimary component carrier and one or more secondary component carriers.A primary component carrier may be referred to as a primary cell (PCell)and a secondary component carrier may be referred to as a secondary cell(SCell).

In another example, certain UEs 104 may communicate with each otherusing device-to-device (D2D) communication link 158. The D2Dcommunication link 158 may use the DL/UL WWAN spectrum. The D2Dcommunication link 158 may use one or more sidelink channels, such as aphysical sidelink broadcast channel (PSBCH), a physical sidelinkdiscovery channel (PSDCH), a physical sidelink shared channel (PSSCH),and a physical sidelink control channel (PSCCH). D2D communication maybe through a variety of wireless D2D communications systems, such as forexample, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE802.11 standard, LTE, or NR.

The wireless communications system may further include a Wi-Fi accesspoint (AP) 150 in communication with Wi-Fi stations (STAs) 152 viacommunication links 154 in a 5 GHz unlicensed frequency spectrum. Whencommunicating in an unlicensed frequency spectrum, the STAs 152/AP 150may perform a clear channel assessment (CCA) prior to communicating inorder to determine whether the channel is available.

The small cell 102′ may operate in a licensed and/or an unlicensedfrequency spectrum. When operating in an unlicensed frequency spectrum,the small cell 102′ may employ NR and use the same 5 GHz unlicensedfrequency spectrum as used by the Wi-Fi AP 150. The small cell 102′,employing NR in an unlicensed frequency spectrum, may boost coverage toand/or increase capacity of the access network.

A base station 102, whether a small cell 102′ or a large cell (e.g.,macro base station), may include an eNB, gNodeB (gNB), or other type ofbase station. Some base stations, such as gNB 180 may operate in atraditional sub 6 GHz spectrum, in millimeter wave (mmW) frequencies,and/or near mmW frequencies in communication with the UE 104. When thegNB 180 operates in mmW or near mmW frequencies, the gNB 180 may bereferred to as an mmW base station. Extremely high frequency (EHF) ispart of the RF in the electromagnetic spectrum. EHF has a range of 30GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters.Radio waves in the band may be referred to as a millimeter wave. NearmmW may extend down to a frequency of 3 GHz with a wavelength of 100millimeters. The super high frequency (SHF) band extends between 3 GHzand 30 GHz, also referred to as centimeter wave. Communications usingthe mmW/near mmW radio frequency band has extremely high path loss and ashort range. The mmW base station 180 may utilize beamforming 182 withthe UE 104 to compensate for the extremely high path loss and shortrange. A base station 102 referred to herein can include a gNB 180.

The EPC 160 may include a Mobility Management Entity (MME) 162, otherMMEs 164, a Serving Gateway 166, a Multimedia Broadcast MulticastService (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC)170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may be incommunication with a Home Subscriber Server (HSS) 174. The MME 162 isthe control node that processes the signaling between the UEs 104 andthe EPC 160. Generally, the MME 162 provides bearer and connectionmanagement. All user Internet protocol (IP) packets are transferredthrough the Serving Gateway 166, which itself is connected to the PDNGateway 172. The PDN Gateway 172 provides UE IP address allocation aswell as other functions. The PDN Gateway 172 and the BM-SC 170 areconnected to the IP Services 176. The IP Services 176 may include theInternet, an intranet, an IP Multimedia Subsystem (IMS), a PS StreamingService, and/or other IP services. The BM-SC 170 may provide functionsfor MBMS user service provisioning and delivery. The BM-SC 170 may serveas an entry point for content provider MBMS transmission, may be used toauthorize and initiate MBMS Bearer Services within a public land mobilenetwork (PLMN), and may be used to schedule MBMS transmissions. The MBMSGateway 168 may be used to distribute MBMS traffic to the base stations102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN)area broadcasting a particular service, and may be responsible forsession management (start/stop) and for collecting eMBMS relatedcharging information.

The 5GC 190 may include a AMF 192, other AMFs 193, a Session ManagementFunction (SMF) 194, and a User Plane Function (UPF) 195. The AMF 192 maybe in communication with a Unified Data Management (UDM) 196. The AMF192 can be a control node that processes the signaling between the UEs104 and the 5GC 190. Generally, the AMF 192 can provide QoS flow andsession management. User Internet protocol (IP) packets (e.g., from oneor more UEs 104) can be transferred through the UPF 195. The UPF 195 canprovide UE IP address allocation for one or more UEs, as well as otherfunctions. The UPF 195 is connected to the IP Services 197. The IPServices 197 may include the Internet, an intranet, an IP MultimediaSubsystem (IMS), a PS Streaming Service, and/or other IP services.

The base station may also be referred to as a gNB, Node B, evolved NodeB (eNB), an access point, a base transceiver station, a radio basestation, a radio transceiver, a transceiver function, a basic serviceset (BSS), an extended service set (ESS), a transmit reception point(TRP), or some other suitable terminology. The base station 102 providesan access point to the EPC 160 or 5GC 190 for a UE 104. Examples of UEs104 include a cellular phone, a smart phone, a session initiationprotocol (SIP) phone, a laptop, a personal digital assistant (PDA), asatellite radio, a positioning system (e.g., satellite, terrestrial), amultimedia device, a video device, a digital audio player (e.g., MP3player), a camera, a game console, a tablet, a smart device, robots,drones, an industrial/manufacturing device, a wearable device (e.g., asmart watch, smart clothing, smart glasses, virtual reality goggles, asmart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)),a vehicle/a vehicular device, a meter (e.g., parking meter, electricmeter, gas meter, water meter, flow meter), a gas pump, a large or smallkitchen appliance, a medical/healthcare device, an implant, asensor/actuator, a display, or any other similar functioning device.Some of the UEs 104 may be referred to as IoT devices (e.g., meters,pumps, monitors, cameras, industrial/manufacturing devices, appliances,vehicles, robots, drones, etc.). IoT UEs may include MTC/enhanced MTC(eMTC, also referred to as CAT-M, Cat M1) UEs, NB-IoT (also referred toas CAT NB1) UEs, as well as other types of UEs. In the presentdisclosure, eMTC and NB-IoT may refer to future technologies that mayevolve from or may be based on these technologies. For example, eMTC mayinclude FeMTC (further eMTC), eFeMTC (enhanced further eMTC), mMTC(massive MTC), etc., and NB-IoT may include eNB-IoT (enhanced NB-IoT),FeNB-IoT (further enhanced NB-IoT), etc. The UE 104 may also be referredto as a station, a mobile station, a subscriber station, a mobile unit,a subscriber unit, a wireless unit, a remote unit, a mobile device, awireless device, a wireless communications device, a remote device, amobile subscriber station, an access terminal, a mobile terminal, awireless terminal, a remote terminal, a handset, a user agent, a mobileclient, a client, or some other suitable terminology.

Turning now to FIGS. 2-5, aspects are depicted with reference to one ormore components and one or more methods that may perform the actions oroperations described herein, where aspects in dashed line may beoptional. Although the operations described below in FIGS. 5 and 6 arepresented in a particular order and/or as being performed by an examplecomponent, it should be understood that the ordering of the actions andthe components performing the actions may be varied, depending on theimplementation. Moreover, it should be understood that the followingactions, functions, and/or described components may be performed by aspecially-programmed processor, a processor executingspecially-programmed software or computer-readable media, or by anyother combination of a hardware component and/or a software componentcapable of performing the described actions or functions.

Referring to FIG. 2, one example of an implementation of a node actingas an IAB node, such as base station 102 (e.g., a base station 102and/or gNB 180, as described above) may include a variety of components,some of which have already been described above and are describedfurther herein, including components such as one or more processors 212and memory 216 and transceiver 202 in communication via one or morebuses 243, which may operate in conjunction with modem 240 and/or BScommunicating component 242 for configuring repetitions of uplinktransmissions (e.g., uplink control messages 246).

In an aspect, the one or more processors 212 can include a modem 240and/or can be part of the modem 240 that uses one or more modemprocessors. Thus, the various functions related to BS communicatingcomponent 242 may be included in modem 240 and/or processors 212 and, inan aspect, can be executed by a single processor, while in otheraspects, different ones of the functions may be executed by acombination of two or more different processors. For example, in anaspect, the one or more processors 212 may include any one or anycombination of a modem processor, or a baseband processor, or a digitalsignal processor, or a transmit processor, or a receiver processor, or atransceiver processor associated with transceiver 202. In other aspects,some of the features of the one or more processors 212 and/or modem 240associated with BS communicating component 242 may be performed bytransceiver 202.

Also, memory 216 may be configured to store data used herein and/orlocal versions of applications 275 or BS communicating component 242and/or one or more of its subcomponents being executed by at least oneprocessor 212. Memory 216 can include any type of computer-readablemedium usable by a computer or at least one processor 212, such asrandom access memory (RAM), read only memory (ROM), tapes, magneticdiscs, optical discs, volatile memory, non-volatile memory, and anycombination thereof. In an aspect, for example, memory 216 may be anon-transitory computer-readable storage medium that stores one or morecomputer-executable codes defining BS communicating component 242 and/orone or more of its subcomponents, and/or data associated therewith, whenbase station 102 is operating at least one processor 212 to execute BScommunicating component 242 and/or one or more of its subcomponents.

Transceiver 202 may include at least one receiver 206 and at least onetransmitter 208. Receiver 206 may include hardware and/or softwareexecutable by a processor for receiving data, the code comprisinginstructions and being stored in a memory (e.g., computer-readablemedium). Receiver 206 may be, for example, a radio frequency (RF)receiver. In an aspect, receiver 206 may receive signals transmitted byat least one base station 102. Additionally, receiver 206 may processsuch received signals, and also may obtain measurements of the signals,such as, but not limited to, Ec/Io, signal-to-noise ratio (SNR),reference signal received power (RSRP), received signal strengthindicator (RSSI), etc. Transmitter 208 may include hardware and/orsoftware executable by a processor for transmitting data, the codecomprising instructions and being stored in a memory (e.g.,computer-readable medium). A suitable example of transmitter 208 mayincluding, but is not limited to, an RF transmitter.

Moreover, in an aspect, base station 102 may include RF front end 288,which may operate in communication with one or more antennas 265 andtransceiver 202 for receiving and transmitting radio transmissions, forexample, wireless communications transmitted by at least one basestation 102 or wireless transmissions transmitted by UE 104. RF frontend 288 may be connected to one or more antennas 265 and can include oneor more low-noise amplifiers (LNAs) 290, one or more switches 292, oneor more power amplifiers (PAs) 298, and one or more filters 296 fortransmitting and receiving RF signals. The antennas 265 may include oneor more antennas, antenna elements, and/or antenna arrays.

In an aspect, LNA 290 can amplify a received signal at a desired outputlevel. In an aspect, each LNA 290 may have a specified minimum andmaximum gain values. In an aspect, RF front end 288 may use one or moreswitches 292 to select a particular LNA 290 and its specified gain valuebased on a desired gain value for a particular application.

Further, for example, one or more PA(s) 298 may be used by RF front end288 to amplify a signal for an RF output at a desired output powerlevel. In an aspect, each PA 298 may have specified minimum and maximumgain values. In an aspect, RF front end 288 may use one or more switches292 to select a particular PA 298 and its specified gain value based ona desired gain value for a particular application.

Also, for example, one or more filters 296 can be used by RF front end288 to filter a received signal to obtain an input RF signal. Similarly,in an aspect, for example, a respective filter 296 can be used to filteran output from a respective PA 298 to produce an output signal fortransmission. In an aspect, each filter 296 can be connected to aspecific LNA 290 and/or PA 298. In an aspect, RF front end 288 can useone or more switches 292 to select a transmit or receive path using aspecified filter 296, LNA 290, and/or PA 298, based on a configurationas specified by transceiver 202 and/or processor 212.

As such, transceiver 202 may be configured to transmit and receivewireless signals through one or more antennas 265 via RF front end 288.In an aspect, transceiver may be tuned to operate at specifiedfrequencies such that UE 104 can communicate with, for example, one ormore base stations 102 or one or more cells associated with one or morebase stations 102. In an aspect, for example, modem 240 can configuretransceiver 202 to operate at a specified frequency and power levelbased on the UE configuration of the UE 104 and the communicationprotocol used by modem 240.

In an aspect, modem 240 can be a multiband-multimode modem, which canprocess digital data and communicate with transceiver 202 such that thedigital data is sent and received using transceiver 202. In an aspect,modem 240 can be multiband and be configured to support multiplefrequency bands for a specific communications protocol. In an aspect,modem 240 can be multimode and be configured to support multipleoperating networks and communications protocols. In an aspect, modem 240can control one or more components of UE 104 (e.g., RF front end 288,transceiver 202) to enable transmission and/or reception of signals fromthe network based on a specified modem configuration. In an aspect, themodem configuration can be based on the mode of the modem and thefrequency band in use. In another aspect, the modem configuration can bebased on UE configuration information associated with UE 104 as providedby the network during cell selection and/or cell reselection.

In an aspect, the processor(s) 212 may correspond to one or more of theprocessors described in connection with the UE in FIG. 7. Similarly, thememory 216 may correspond to the memory described in connection with theUE in FIG. 7.

Referring to FIG. 3, one example of an implementation of UE 104 mayinclude a variety of components, some of which have already beendescribed above and are described further herein, including componentssuch as one or more processors 312 and memory 316 and transceiver 302 incommunication via one or more buses 344, which may operate inconjunction with modem 340 and/or UE communicating component 252 forconfiguring repetitions of uplink transmissions (e.g., uplink controlmessage 256) based on an indication of repetitive scheduling 254.

The transceiver 302, receiver 306, transmitter 308, one or moreprocessors 312, memory 316, applications 375, buses 344, RF front end388, LNAs 390, switches 392, filters 396, PAs 398, and one or moreantennas 365 may be the same as or similar to the correspondingcomponents of base station 102, as described above, but configured orotherwise programmed for base station operations as opposed to basestation operations.

In an aspect, the processor(s) 312 may correspond to one or more of theprocessors described in connection with the base station in FIG. 7.Similarly, the memory 316 may correspond to the memory described inconnection with the base station in FIG. 7.

FIG. 4 illustrates an example of a process flow 400 that supportsindications of uplink control channel repetition factor in accordancewith aspects of the present disclosure. For example, process flow 400may include, or may be implemented by, base station 102 and UE 104,which may be examples of corresponding devices described with referenceto FIGS. 1-3.

At 410, base station may optionally determine a configuration betweenthe one or more repetition factors for the uplink control channel, e.g.,PUCCH, and the repetitive scheduling of the downlink control channel,e.g., PDCCH.

At 420, base station 102 may transmit, and UE 104 may receive, anindication of a repetitive scheduling of a downlink control channel thattriggers a correspondence between the repetitive scheduling of thedownlink control channel and one or more repetition factors for anuplink control channel. For example, the indication may trigger UE 104with a correspondence between the repetitive scheduling of the downlinkcontrol channel and one or more repetition factors for an uplink controlchannel. Each one of the one or more repetition factors may correspondto a repetition factor (e.g., a repetition count) for uplink controlmessages on the PUCCH. In some examples, base station 102 may includethe indication of the correspondence in a PUCCH resource configurationmessage. In some examples, base station 102 may include the indicationof the correspondence in a CORESET configuration message. In someexamples, base station 102 may include the indication of thecorrespondence in a search space configuration message.

At 430, UE 104 may determine a correlation, i.e., relationship, betweenthe one or more repetition factors and the repetitive scheduling of thedownlink control channel.

At 440, UE 104 may select a first repetition factor for use in PUCCHrepetition. UE 104 may select the first repetition factor of the one ormore repetition factors for the uplink control channel.

In some examples, UE 104 may apply the indicated repetition factor to aPUCCH transmission associated with a physical downlink shared channel(PDSCH) triggered by the DCI message. For example, the DCI message,which included the indication received at 420, may schedule a downlinkmessage on a PDSCH, and PUCCH resources for transmitting feedbackinformation associated with or responsive to the downlink message on thePDSCH (e.g., an acknowledgement (ACK) message or a negativeacknowledgement (NACK) message). In such examples, at 450, base station102 may transmit, and UE 104 may receive, the downlink message scheduledby the DCI message at 420. UE 104 may then transmit the feedback message(e.g., an ACK or NACK message) to base station 102 at 450 using therepetition factor. In such examples, UE 104 may only use the indicatedrepetition factor for the feedback message.

At 460, UE 104 may transmit one or more repetitions of the uplinkcontrol message using the repetition factor (e.g., the repetitioncount). For example, at 460, UE 104 may transmit repetitions oradditional control messages using another repetition factor (e.g., apreviously indicated repetition factor, a default repetition factor, orno repetition factor). In some examples, UE 104 may apply the indicatedrepetition factor to all PUCCH transmissions subsequent to receiving theDCI message at 420 (e.g., until receiving a subsequent DCI message). Forexample, at 460, UE 104 may transmit repetitions of an uplink controlmessage (e.g., a feedback message associated with a data messagereceived at 450) using the repetition factor. At 460, UE 104 maytransmit repetitions of additional uplink control messages (e.g.,control messages associated with other downlink transmissions, periodicor semi-persistent uplink control messages not associated with the DCImessage, etc.). UE 104 may continue to apply the repetition factorselected at 440 for a subset or all PUCCH transmissions until asubsequent repetition factor is indicated by base station 102.

Turning now to FIGS. 5 and 6, aspects are depicted with reference to oneor more components and one or more methods that may perform the actionsor operations described herein, where aspects in dashed line may beoptional. Although the operations described below in FIGS. 5 and 6 arepresented in a particular order and/or as being performed by an examplecomponent, it should be understood that the ordering of the actions andthe components performing the actions may be varied, depending on theimplementation. Moreover, it should be understood that the followingactions, functions, and/or described components may be performed byreference to one or more components of FIGS. 1, 2, 3, 4 and/or 7, asdescribed herein, a specially-programmed processor, a processorexecuting specially-programmed software or computer-readable media, orby any other combination of a hardware component and/or a softwarecomponent capable of performing the described actions or functions.

FIG. 5 illustrates a flow chart of an example of a method 500 forwireless communication at a network entity, such as the network entity102. In an example, a base station 102 can perform the functionsdescribed in method 500 using one or more of the components described inFIGS. 1, 2, 4, and 7.

At block 502, the method 500 may determine a configuration between theone or more repetition factors for the uplink control channel and therepetitive scheduling of the downlink control channel. In an aspect, theBS communicating component 242, e.g., in conjunction with processor(s)212, memory 216, and/or transceiver 202, may be configured to determinea configuration between the one or more repetition factors for theuplink control channel and the repetitive scheduling of the downlinkcontrol channel. Thus, the base station 102, the processor(s) 212, theBS communicating component 242 or one of its subcomponents may definethe means for determining a configuration between the one or morerepetition factors for the uplink control channel and the repetitivescheduling of the downlink control channel. For example, in an aspect,the base station 102 and/or the BS communication component 242 maydetermine a configuration for repetitive uplink communications, and/orperforms other signal processes such as described above with respect toFIG. 2.

At block 504, the method 500 may transmit, to a UE, an indication ofrepetitive scheduling of a downlink control channel, wherein theindication triggers a correspondence between the repetitive schedulingof the downlink control channel and one or more repetition factors foran uplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel. In an aspect, the BS communicating component242, e.g., in conjunction with processor(s) 212, memory 216, and/ortransceiver 202, may be configured to transmit, to a UE 104, anindication of repetitive scheduling 244 of a downlink control channel,wherein the indication triggers a correspondence between the repetitivescheduling of the downlink control channel and one or more repetitionfactors for an uplink control channel, each of the one or morerepetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel. Thus, the base station102, the processor(s) 212, the BS communicating component 242 or one ofits subcomponents may define the means for transmitting, to a UE 104, anindication of repetitive scheduling 244 of a downlink control channel,wherein the indication triggers a correspondence between the repetitivescheduling of the downlink control channel and one or more repetitionfactors for an uplink control channel, each of the one or morerepetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel. For example, in anaspect, the base station 102 and/or the BS communication component 242may process a signal into an indication, transmits the indication,and/or performs other signal processes such as described above withrespect to FIG. 2.

At block 506, the method 500 may receive, from the UE on the uplinkcontrol channel, repetitions of an uplink control message according to afirst repetition factor of the one or more repetition factors for theuplink control channel. In an aspect, the BS communicating component242, e.g., in conjunction with processor(s) 212, memory 216, and/ortransceiver 202, may be configured to receive, from the UE 104 on theuplink control channel, repetitions of an uplink control message 246according to a first repetition factor of the one or more repetitionfactors for the uplink control channel. Thus, the base station 102, theprocessor(s) 212, the BS communicating component 242 or one of itssubcomponents may define the means for receiving, from the UE on theuplink control channel, repetitions of an uplink control messageaccording to a first repetition factor of the one or more repetitionfactors for the uplink control channel.

In some aspects, transmitting the indication of repetitive scheduling ofthe downlink control channel further comprises transmitting theindication of repetitive scheduling of the downlink control channelbased on the configuration between the one or more repetition factorsfor the uplink control channel and the repetitive scheduling of thedownlink control channel. For example, in an aspect, the base station102 and/or the BS communication component 242 may receive a signal,process the signal into an uplink control message, and/or performs othersignal processes such as described above with respect to FIG. 2.

In some aspects, the indication triggers the correspondence between therepetitive scheduling of the downlink control channel and the one ormore repetition factors for the uplink control channel that carries oneor more acknowledgement (ACK) or negative ACK (NACK) messages for thedownlink control channel.

In some aspects, the indication triggers the correspondence between therepetitive scheduling of the downlink control channel and the one ormore repetition factors for one or more uplink control channels otherthan the uplink control channel that carries one or more ACK or NACKmessages for the downlink control channel.

In some aspects, the indication of repetitive scheduling of the downlinkcontrol channel corresponds to a RRC message. For example, theindication may be transmitted in an RRC message to UE 104.

In some aspects, transmitting the indication of repetitive scheduling ofthe downlink control channel further comprises transmitting the RRCmessage based on a resource set of the uplink control channel.

In some aspects, performing a configuration of the resource set of theuplink control channel; and wherein transmitting the RRC message furthercomprising transmitting the RRC message in response to performing theconfiguration of the resource set of the uplink control channel.

In some aspects, transmitting the indication of repetitive scheduling ofthe downlink control channel further comprises transmitting theindication of repetitive scheduling of the downlink control channelbased on at least one of an uplink control channel format, an uplinkcontrol information (UCI) size and an UCI content.

In some aspects, the indication of repetitive scheduling of the downlinkcontrol channel corresponds to a DCI. For example, the indication may betransmitted in a DCI to UE 104.

FIG. 6 illustrates a flow chart of an example of a method 600 forwireless communication at a UE, such as the UE 104. In an example, a UE104 can perform the functions described in method 600 using one or moreof the components described in FIGS. 1, 3, 4, and 7.

At block 602, the method 600 may receive, from a network entity, anindication of repetitive scheduling of a downlink control channel,wherein the indication triggers a correspondence between the repetitivescheduling of the downlink control channel and one or more repetitionfactors for an uplink control channel, each of the one or morerepetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel. In an aspect, the UEcommunicating component 252, e.g., in conjunction with processor(s) 312,memory 316, and/or transceiver 302, may be configured to receive, from anetwork entity 102, an indication of repetitive scheduling 254 of adownlink control channel, wherein the indication triggers acorrespondence between the repetitive scheduling of the downlink controlchannel and one or more repetition factors for an uplink controlchannel, each of the one or more repetition factors corresponding to arepetition count for uplink control messages on the uplink controlchannel. Thus, the base station 102, the processor(s) 312, the UEcommunicating component 252 or one of its subcomponents may define themeans for receiving, from a network entity 102, an indication ofrepetitive scheduling 254 of a downlink control channel, wherein theindication triggers a correspondence between the repetitive schedulingof the downlink control channel and one or more repetition factors foran uplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel. For example, in an aspect, the UE 104 and/or theUE communication component 252 may receive a signal, process the signalinto an indication, and/or performs other signal processes such asdescribed above with respect to FIG. 3.

At block 604, the method 600 may transmit, to the network entity on theuplink control channel, repetitions of an uplink control messageaccording to a first repetition factor of the one or more repetitionfactors for the uplink control channel. In an aspect, the UEcommunicating component 252, e.g., in conjunction with processor(s) 312,memory 316, and/or transceiver 302, may be configured to transmit, tothe network entity 102 on the uplink control channel, repetitions of anuplink control message 256 according to a first repetition factor of theone or more repetition factors for the uplink control channel. Thus, thebase station 102, the processor(s) 312, the UE communicating component252 or one of its subcomponents may define the means for transmitting,to the network entity 102 on the uplink control channel, repetitions ofan uplink control message 256 according to a first repetition factor ofthe one or more repetition factors for the uplink control channel. Forexample, in an aspect, the UE 104 and/or the UE communication component252 may process an uplink control message into a signal, transmit thesignal, and/or performs other signal processes such as described abovewith respect to FIG. 3.

In some aspects, the indication triggers the correspondence between therepetitive scheduling of the downlink control channel and the one ormore repetition factors for the uplink control channel that carries oneor more ACK or NACK messages for the downlink control channel.

In some aspects, the indication triggers the correspondence between therepetitive scheduling of the downlink control channel and the one ormore repetition factors for one or more uplink control channels otherthan the uplink control channel that carries one or more ACK or NACKmessages for the downlink control channel.

In some aspects, the indication of repetitive scheduling of the downlinkcontrol channel corresponds to a RRC message. For example, theindication may be transmitted in an RRC message to UE 104.

In some aspects, receiving the indication of repetitive scheduling ofthe downlink control channel further comprises receiving the RRC messagebased on a resource set of the uplink control channel.

In some aspects, receiving the indication of repetitive scheduling ofthe downlink control channel further comprises receiving the indicationof repetitive scheduling of the downlink control channel based on atleast one of an uplink control channel format, an UCI size and an UCIcontent.

In some aspects, the indication of repetitive scheduling of the downlinkcontrol channel corresponds to a DCI. For example, the indication may betransmitted in a DCI to UE 104.

FIG. 7 is a block diagram of a MIMO communication system 700 including abase station 102, which may be acting as an IAB node or a parent node,and a UE 104. The MIMO communication system 900 may illustrate aspectsof the wireless communication access network 100 described withreference to FIG. 1. The base station 102 may be an example of aspectsof the base station 102 described with reference to FIG. 1. The basestation 102 may be equipped with antennas 734 and 735, and the UE 104may be equipped with antennas 752 and 753. In the MIMO communicationsystem 700, the base station 102 may be able to send data over multiplecommunication links at the same time. Each communication link may becalled a “layer” and the “rank” of the communication link may indicatethe number of layers used for communication. For example, in a 2×2 MIMOcommunication system where base station 102 transmits two “layers,” therank of the communication link between the base station 102 and the UE104 is two.

At the base station 102, a transmit (Tx) processor 720 may receive datafrom a data source. The transmit processor 720 may process the data. Thetransmit processor 720 may also generate control symbols or referencesymbols. A transmit MIMO processor 730 may perform spatial processing(e.g., precoding) on data symbols, control symbols, or referencesymbols, if applicable, and may provide output symbol streams to thetransmit modulator/demodulators 732 and 733. Each modulator/demodulator732 through 733 may process a respective output symbol stream (e.g., forOFDM, etc.) to obtain an output sample stream. Eachmodulator/demodulator 732 through 733 may further process (e.g., convertto analog, amplify, filter, and upconvert) the output sample stream toobtain a DL signal. In one example, DL signals frommodulator/demodulators 732 and 733 may be transmitted via the antennas734 and 735, respectively.

The UE 104 may be an example of aspects of the UEs 104 described withreference to FIGS. 1 and 2. At the UE 104, the UE antennas 752 and 753may receive the DL signals from the base station 102 and may provide thereceived signals to the modulator/demodulators 754 and 755,respectively. Each modulator/demodulator 754 through 755 may condition(e.g., filter, amplify, downconvert, and digitize) a respective receivedsignal to obtain input samples. Each modulator/demodulator 754 through755 may further process the input samples (e.g., for OFDM, etc.) toobtain received symbols. A MIMO detector 756 may obtain received symbolsfrom the modulator/demodulators 754 and 755, perform MIMO detection onthe received symbols, if applicable, and provide detected symbols. Areceive (Rx) processor 758 may process (e.g., demodulate, deinterleave,and decode) the detected symbols, providing decoded data for the UE 104to a data output, and provide decoded control information to a processor980, or memory 982.

The processor 780 may in some cases execute stored instructions toinstantiate a BS communicating component 242 (see e.g., FIGS. 1 and 2).

On the uplink (UL), at the UE 104, a transmit processor 764 may receiveand process data from a data source. The transmit processor 764 may alsogenerate reference symbols for a reference signal. The symbols from thetransmit processor 764 may be precoded by a transmit MIMO processor 766if applicable, further processed by the modulator/demodulators 754 and755 (e.g., for SC-FDMA, etc.), and be transmitted to the base station102 in accordance with the communication parameters received from thebase station 102. At the base station 102, the UL signals from the UE104 may be received by the antennas 734 and 735, processed by themodulator/demodulators 732 and 733, detected by a MIMO detector 736 ifapplicable, and further processed by a receive processor 738. Thereceive processor 738 may provide decoded data to a data output and tothe processor 740 or memory 742. The processor 740 may in some casesexecute stored instructions to instantiate a UE communicating component252 (see e.g., FIGS. 1 and 3).

The components of the UE 104 may, individually or collectively, beimplemented with one or more ASICs adapted to perform some or all of theapplicable functions in hardware. Each of the noted modules may be ameans for performing one or more functions related to operation of theMIMO communication system 700. Similarly, the components of the basestation 102 may, individually or collectively, be implemented with oneor more ASICs adapted to perform some or all of the applicable functionsin hardware. Each of the noted components may be a means for performingone or more functions related to operation of the MIMO communicationsystem 700.

The following provides an overview of examples of the presentdisclosure:

Example 1. A method of wireless communication at a network entity,comprising: transmitting, to a user equipment (UE), an indication ofrepetitive scheduling of a downlink control channel, wherein theindication triggers a correspondence between the repetitive schedulingof the downlink control channel and one or more repetition factors foran uplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel; and receiving, from the UE on the uplink controlchannel, repetitions of an uplink control message according to a firstrepetition factor of the one or more repetition factors for the uplinkcontrol channel.

Example 2. The method of example 1, further comprising determining aconfiguration between the one or more repetition factors for the uplinkcontrol channel and the repetitive scheduling of the downlink controlchannel.

Example 3. The method of examples 1 and 2, wherein transmitting theindication of repetitive scheduling of the downlink control channelfurther comprises transmitting the indication of repetitive schedulingof the downlink control channel based on the configuration between theone or more repetition factors for the uplink control channel and therepetitive scheduling of the downlink control channel.

Example 4. The method of example 1, wherein the indication triggers thecorrespondence between the repetitive scheduling of the downlink controlchannel and the one or more repetition factors for the uplink controlchannel that carries one or more acknowledgement (ACK) or negative ACK(NACK) messages for the downlink control channel.

Example 5. The method of example 1, wherein the indication triggers thecorrespondence between the repetitive scheduling of the downlink controlchannel and the one or more repetition factors for one or more uplinkcontrol channels other than the uplink control channel that carries oneor more acknowledgement (ACK) or negative ACK (NACK) messages for thedownlink control channel.

Example 6. The method of example 1, wherein the indication of repetitivescheduling of the downlink control channel corresponds to a radioresource control (RRC) message.

Example 7. The method of examples 1 and 6, wherein transmitting theindication of repetitive scheduling of the downlink control channelfurther comprises transmitting the RRC message based on a resource setof the uplink control channel.

Example 8. The method of examples 1, 6, and 7, further comprising:performing a configuration of the resource set of the uplink controlchannel; and wherein transmitting the RRC message further comprisingtransmitting the RRC message in response to performing the configurationof the resource set of the uplink control channel.

Example 9. The method of example 1, wherein transmitting the indicationof repetitive scheduling of the downlink control channel furthercomprises transmitting the indication of repetitive scheduling of thedownlink control channel based on at least one of an uplink controlchannel format, an uplink control information (UCI) size and an UCIcontent.

Example 10. The method of example 1, wherein the indication ofrepetitive scheduling of the downlink control channel corresponds to adownlink control information (DCI).

Example 11. A method of wireless communication at a user equipment (UE),comprising: receiving, from a network entity, an indication ofrepetitive scheduling of a downlink control channel, wherein theindication triggers a correspondence between the repetitive schedulingof the downlink control channel and one or more repetition factors foran uplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel; and transmitting, to the network entity on theuplink control channel, repetitions of an uplink control messageaccording to a first repetition factor of the one or more repetitionfactors for the uplink control channel.

Example 12. The method of example 11, wherein the indication triggersthe correspondence between the repetitive scheduling of the downlinkcontrol channel and the one or more repetition factors for the uplinkcontrol channel that carries one or more acknowledgement (ACK) ornegative ACK (NACK) messages for the downlink control channel.

Example 13. The method of example 11, wherein the indication triggersthe correspondence between the repetitive scheduling of the downlinkcontrol channel and the one or more repetition factors for one or moreuplink control channels other than the uplink control channel thatcarries one or more acknowledgement (ACK) or negative ACK (NACK)messages for the downlink control channel.

Example 14. The method of example 11, wherein the indication ofrepetitive scheduling of the downlink control channel corresponds to aradio resource control (RRC) message.

Example 15. The method of examples 11 and 14, wherein receiving theindication of repetitive scheduling of the downlink control channelfurther comprises receiving the RRC message based on a resource set ofthe uplink control channel.

Example 16. The method of example 11, wherein receiving the indicationof repetitive scheduling of the downlink control channel furthercomprises receiving the indication of repetitive scheduling of thedownlink control channel based on at least one of an uplink controlchannel format, an uplink control information (UCI) size and an UCIcontent.

Example 17. The method of example 11, wherein the indication ofrepetitive scheduling of the downlink control channel corresponds to adownlink control information (DCI).

Example 18. An apparatus for wireless communication at a network entity,comprising: a transceiver; a memory configured to store instructions;and one or more processors communicatively coupled with the transceiverand the memory, wherein the one or more processors are configured toexecute the instructions to: transmit, to a user equipment (UE), anindication of repetitive scheduling of a downlink control channel,wherein the indication triggers a correspondence between the repetitivescheduling of the downlink control channel and one or more repetitionfactors for an uplink control channel, each of the one or morerepetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel; and receive, from the UEon the uplink control channel, repetitions of an uplink control messageaccording to a first repetition factor of the one or more repetitionfactors for the uplink control channel.

Example 19. The apparatus of example 18, wherein the one or moreprocessors are configured to determine a configuration between the oneor more repetition factors for the uplink control channel and therepetitive scheduling of the downlink control channel.

Example 20. The apparatus of examples 18 and 19, wherein the one or moreprocessors configured to transmit the indication of repetitivescheduling of the downlink control channel is further configured totransmit the indication of repetitive scheduling of the downlink controlchannel based on the configuration between the one or more repetitionfactors for the uplink control channel and the repetitive scheduling ofthe downlink control channel.

Example 21. The apparatus of example 18, wherein the indication triggersthe correspondence between the repetitive scheduling of the downlinkcontrol channel and the one or more repetition factors for the uplinkcontrol channel that carries one or more acknowledgement (ACK) ornegative ACK (NACK) messages for the downlink control channel.

Example 22. The apparatus of example 18, wherein the indication triggersthe correspondence between the repetitive scheduling of the downlinkcontrol channel and the one or more repetition factors for one or moreuplink control channels other than the uplink control channel thatcarries one or more acknowledgement (ACK) or negative ACK (NACK)messages for the downlink control channel.

Example 23. The apparatus of example 18, wherein the indication ofrepetitive scheduling of the downlink control channel corresponds to aradio resource control (RRC) message.

Example 24. The apparatus of examples 18 and 23, wherein the one or moreprocessors configured to transmit the indication of repetitivescheduling of the downlink control channel is further configured totransmit the RRC message based on a resource set of the uplink controlchannel.

Example 25. The apparatus of examples 18, 23, and 24, wherein the one ormore processors are configured to: perform a configuration of theresource set of the uplink control channel; and wherein the one or moreprocessors configured to transmit the RRC message is further configuredto transmit the RRC message in response to performing the configurationof the resource set of the uplink control channel.

Example 26. The apparatus of example 18, wherein the one or moreprocessors configured to transmit the indication of repetitivescheduling of the downlink control channel is further configured totransmit the indication of repetitive scheduling of the downlink controlchannel based on at least one of an uplink control channel format, anuplink control information (UCI) size and an UCI content.

Example 27. An apparatus for wireless communication at a user equipment(UE), comprising: a transceiver; a memory configured to storeinstructions; and one or more processors communicatively coupled withthe transceiver and the memory, wherein the one or more processors areconfigured to execute the instructions to: receive, from a networkentity, an indication of repetitive scheduling of a downlink controlchannel, wherein the indication triggers a correspondence between therepetitive scheduling of the downlink control channel and one or morerepetition factors for an uplink control channel, each of the one ormore repetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel; and transmit, to thenetwork entity on the uplink control channel, repetitions of an uplinkcontrol message according to a first repetition factor of the one ormore repetition factors for the uplink control channel.

Example 28. The apparatus of example 27, wherein the indication triggersthe correspondence between the repetitive scheduling of the downlinkcontrol channel and the one or more repetition factors for the uplinkcontrol channel that carries one or more acknowledgement (ACK) ornegative ACK (HACK) messages for the downlink control channel.

Example 29. The apparatus of example 27, wherein the indication triggersthe correspondence between the repetitive scheduling of the downlinkcontrol channel and the one or more repetition factors for one or moreuplink control channels other than the uplink control channel thatcarries one or more acknowledgement (ACK) or negative ACK (NACK)messages for the downlink control channel.

Example 30. The apparatus of example 27, wherein the indication ofrepetitive scheduling of the downlink control channel corresponds to aradio resource control (RRC) message.

The above detailed description set forth above in connection with theappended drawings describes examples and does not represent the onlyexamples that may be implemented or that are within the scope of theclaims. The term “example,” when used in this description, means“serving as an example, instance, or illustration,” and not “preferred”or “advantageous over other examples.” The detailed description includesspecific details for the purpose of providing an understanding of thedescribed techniques. These techniques, however, may be practicedwithout these specific details. In some instances, well-known structuresand apparatuses are shown in block diagram form in order to avoidobscuring the concepts of the described examples.

Information and signals may be represented using any of a variety ofdifferent technologies and techniques. For example, data, instructions,commands, information, signals, bits, symbols, and chips that may bereferenced throughout the above description may be represented byvoltages, currents, electromagnetic waves, magnetic fields or particles,optical fields or particles, computer-executable code or instructionsstored on a computer-readable medium, or any combination thereof.

The various illustrative blocks and components described in connectionwith the disclosure herein may be implemented or performed with aspecially-programmed device, such as but not limited to a processor, adigital signal processor (DSP), an ASIC, a FPGA or other programmablelogic device, a discrete gate or transistor logic, a discrete hardwarecomponent, or any combination thereof designed to perform the functionsdescribed herein. A specially-programmed processor may be amicroprocessor, but in the alternative, the processor may be anyconventional processor, controller, microcontroller, or state machine. Aspecially-programmed processor may also be implemented as a combinationof computing devices, e.g., a combination of a DSP and a microprocessor,multiple microprocessors, one or more microprocessors in conjunctionwith a DSP core, or any other such configuration.

The functions described herein may be implemented in hardware, software,or any combination thereof. If implemented in software executed by aprocessor, the functions may be stored on or transmitted over as one ormore instructions or code on a non-transitory computer-readable medium.Other examples and implementations are within the scope and spirit ofthe disclosure and appended claims. For example, due to the nature ofsoftware, functions described above can be implemented using softwareexecuted by a specially programmed processor, hardware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations. Moreover, the term “or” is intended to mean an inclusive “or”rather than an exclusive “or.” That is, unless specified otherwise, orclear from the context, the phrase, for example, “X employs A or B” isintended to mean any of the natural inclusive permutations. That is, forexample the phrase “X employs A or B” is satisfied by any of thefollowing instances: X employs A; X employs B; or X employs both A andB. Also, as used herein, including in the claims, “or” as used in a listof items prefaced by “at least one of” indicates a disjunctive list suchthat, for example, a list of “at least one of A, B, or C” means A or Bor C or AB or AC or BC or ABC (A and B and C).

Computer-readable media includes both computer storage media andcommunication media including any medium that facilitates transfer of acomputer program from one place to another. A storage medium may be anyavailable medium that can be accessed by a general purpose or specialpurpose computer. By way of example, and not limitation,computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or otheroptical disk storage, magnetic disk storage or other magnetic storagedevices, or any other medium that can be used to carry or store desiredprogram code means in the form of instructions or data structures andthat can be accessed by a general-purpose or special-purpose computer,or a general-purpose or special-purpose processor. Also, any connectionis properly termed a computer-readable medium. For example, if thesoftware is transmitted from a website, server, or other remote sourceusing a coaxial cable, fiber optic cable, twisted pair, digitalsubscriber line (DSL), or wireless technologies such as infrared, radio,and microwave, then the coaxial cable, fiber optic cable, twisted pair,DSL, or wireless technologies such as infrared, radio, and microwave areincluded in the definition of medium. Disk and disc, as used herein,include compact disc (CD), laser disc, optical disc, digital versatiledisc (DVD), floppy disk and Blu-ray disc where disks usually reproducedata magnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofcomputer-readable media.

The previous description of the disclosure is provided to enable aperson skilled in the art to make or use the disclosure. Variousmodifications to the disclosure will be readily apparent to thoseskilled in the art, and the common principles defined herein may beapplied to other variations without departing from the spirit or scopeof the disclosure. Furthermore, although elements of the describedaspects and/or embodiments may be described or claimed in the singular,the plural is contemplated unless limitation to the singular isexplicitly stated. Additionally, all or a portion of any aspect and/orembodiment may be utilized with all or a portion of any other aspectand/or embodiment, unless stated otherwise. Thus, the disclosure is notto be limited to the examples and designs described herein but is to beaccorded the widest scope consistent with the principles and novelfeatures disclosed herein.

What is claimed is:
 1. A method of wireless communication at a networkentity, comprising: transmitting, to a user equipment (UE), anindication of repetitive scheduling of a downlink control channel,wherein the indication triggers a correspondence between the repetitivescheduling of the downlink control channel and one or more repetitionfactors for an uplink control channel, each of the one or morerepetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel; and receiving, from theUE on the uplink control channel, repetitions of an uplink controlmessage according to a first repetition factor of the one or morerepetition factors for the uplink control channel.
 2. The method ofclaim 1, further comprising determining a configuration between the oneor more repetition factors for the uplink control channel and therepetitive scheduling of the downlink control channel.
 3. The method ofclaim 2, wherein transmitting the indication of the repetitivescheduling of the downlink control channel further comprisestransmitting the indication of the repetitive scheduling of the downlinkcontrol channel based on the configuration between the one or morerepetition factors for the uplink control channel and the repetitivescheduling of the downlink control channel.
 4. The method of claim 1,wherein the indication triggers the correspondence between therepetitive scheduling of the downlink control channel and the one ormore repetition factors for the uplink control channel that carries oneor more acknowledgement (ACK) or negative ACK (HACK) messages for thedownlink control channel.
 5. The method of claim 1, wherein theindication triggers the correspondence between the repetitive schedulingof the downlink control channel and the one or more repetition factorsfor one or more uplink control channels other than the uplink controlchannel that carries one or more acknowledgement (ACK) or negative ACK(NACK) messages for the downlink control channel.
 6. The method of claim1, wherein the indication of the repetitive scheduling of the downlinkcontrol channel corresponds to a radio resource control (RRC) message.7. The method of claim 6, wherein transmitting the indication of therepetitive scheduling of the downlink control channel further comprisestransmitting the RRC message based on a resource set of the uplinkcontrol channel.
 8. The method of claim 7, further comprising:performing a configuration of the resource set of the uplink controlchannel; and wherein transmitting the RRC message further comprisingtransmitting the RRC message in response to performing the configurationof the resource set of the uplink control channel.
 9. The method ofclaim 1, wherein transmitting the indication of repetitive scheduling ofthe downlink control channel further comprises transmitting theindication of the repetitive scheduling of the downlink control channelbased on at least one of an uplink control channel format, an uplinkcontrol information (UCI) size and an UCI content.
 10. The method ofclaim 1, wherein the indication of the repetitive scheduling of thedownlink control channel corresponds to a downlink control information(DCI).
 11. A method of wireless communication at a user equipment (UE),comprising: receiving, from a network entity, an indication ofrepetitive scheduling of a downlink control channel, wherein theindication triggers a correspondence between the repetitive schedulingof the downlink control channel and one or more repetition factors foran uplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel; and transmitting, to the network entity on theuplink control channel, repetitions of an uplink control messageaccording to a first repetition factor of the one or more repetitionfactors for the uplink control channel.
 12. The method of claim 11,wherein the indication triggers the correspondence between therepetitive scheduling of the downlink control channel and the one ormore repetition factors for the uplink control channel that carries oneor more acknowledgement (ACK) or negative ACK (NACK) messages for thedownlink control channel.
 13. The method of claim 11, wherein theindication triggers the correspondence between the repetitive schedulingof the downlink control channel and the one or more repetition factorsfor one or more uplink control channels other than the uplink controlchannel that carries one or more acknowledgement (ACK) or negative ACK(NACK) messages for the downlink control channel.
 14. The method ofclaim 11, wherein the indication of the repetitive scheduling of thedownlink control channel corresponds to a radio resource control (RRC)message.
 15. The method of claim 14, wherein receiving the indication ofthe repetitive scheduling of the downlink control channel furthercomprises receiving the RRC message based on a resource set of theuplink control channel.
 16. The method of claim 11, wherein receivingthe indication of the repetitive scheduling of the downlink controlchannel further comprises receiving the indication of the repetitivescheduling of the downlink control channel based on at least one of anuplink control channel format, an uplink control information (UCI) sizeand an UCI content.
 17. The method of claim 11, wherein the indicationof the repetitive scheduling of the downlink control channel correspondsto a downlink control information (DCI).
 18. An apparatus for wirelesscommunication at a network entity, comprising: a transceiver; a memoryconfigured to store instructions; and one or more processorscommunicatively coupled with the transceiver and the memory, wherein theone or more processors are configured to execute the instructions to:transmit, to a user equipment (UE), an indication of repetitivescheduling of a downlink control channel, wherein the indicationtriggers a correspondence between the repetitive scheduling of thedownlink control channel and one or more repetition factors for anuplink control channel, each of the one or more repetition factorscorresponding to a repetition count for uplink control messages on theuplink control channel; and receive, from the UE on the uplink controlchannel, repetitions of an uplink control message according to a firstrepetition factor of the one or more repetition factors for the uplinkcontrol channel.
 19. The apparatus of claim 18, wherein the one or moreprocessors are configured to determine a configuration between the oneor more repetition factors for the uplink control channel and therepetitive scheduling of the downlink control channel.
 20. The apparatusof claim 19, wherein the one or more processors configured to transmitthe indication of the repetitive scheduling of the downlink controlchannel is further configured to transmit the indication of therepetitive scheduling of the downlink control channel based on theconfiguration between the one or more repetition factors for the uplinkcontrol channel and the repetitive scheduling of the downlink controlchannel.
 21. The apparatus of claim 18, wherein the indication triggersthe correspondence between the repetitive scheduling of the downlinkcontrol channel and the one or more repetition factors for the uplinkcontrol channel that carries one or more acknowledgement (ACK) ornegative ACK (NACK) messages for the downlink control channel.
 22. Theapparatus of claim 18, wherein the indication triggers thecorrespondence between the repetitive scheduling of the downlink controlchannel and the one or more repetition factors for one or more uplinkcontrol channels other than the uplink control channel that carries oneor more acknowledgement (ACK) or negative ACK (NACK) messages for thedownlink control channel.
 23. The apparatus of claim 18, wherein theindication of the repetitive scheduling of the downlink control channelcorresponds to a radio resource control (RRC) message.
 24. The apparatusof claim 23, wherein the one or more processors configured to transmitthe indication of the repetitive scheduling of the downlink controlchannel is further configured to transmit the RRC message based on aresource set of the uplink control channel.
 25. The apparatus of claim24, wherein the one or more processors are configured to: perform aconfiguration of the resource set of the uplink control channel; andwherein the one or more processors configured to transmit the RRCmessage is further configured to transmit the RRC message in response toperforming the configuration of the resource set of the uplink controlchannel.
 26. The apparatus of claim 18, wherein the one or moreprocessors configured to transmit the indication of the repetitivescheduling of the downlink control channel is further configured totransmit the indication of the repetitive scheduling of the downlinkcontrol channel based on at least one of an uplink control channelformat, an uplink control information (UCI) size and an UCI content. 27.An apparatus for wireless communication at a user equipment (UE),comprising: a transceiver; a memory configured to store instructions;and one or more processors communicatively coupled with the transceiverand the memory, wherein the one or more processors are configured toexecute the instructions to: receive, from a network entity, anindication of repetitive scheduling of a downlink control channel,wherein the indication triggers a correspondence between the repetitivescheduling of the downlink control channel and one or more repetitionfactors for an uplink control channel, each of the one or morerepetition factors corresponding to a repetition count for uplinkcontrol messages on the uplink control channel; and transmit, to thenetwork entity on the uplink control channel, repetitions of an uplinkcontrol message according to a first repetition factor of the one ormore repetition factors for the uplink control channel.
 28. Theapparatus of claim 27, wherein the indication triggers thecorrespondence between the repetitive scheduling of the downlink controlchannel and the one or more repetition factors for the uplink controlchannel that carries one or more acknowledgement (ACK) or negative ACK(NACK) messages for the downlink control channel.
 29. The apparatus ofclaim 27, wherein the indication triggers the correspondence between therepetitive scheduling of the downlink control channel and the one ormore repetition factors for one or more uplink control channels otherthan the uplink control channel that carries one or more acknowledgement(ACK) or negative ACK (NACK) messages for the downlink control channel.30. The apparatus of claim 27, wherein the indication of the repetitivescheduling of the downlink control channel corresponds to a radioresource control (RRC) message.